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Ernie & Erica Wisner's:

Rocket Mass Heater Builder's Guide

Heating with wood is often considered a natural and economical alternative to electricity or fossil fuels. However, even with a fairly new and efficient woodstove, many cords of wood are required for burning over the course of a single winter, and incomplete combustion can contribute to poor air quality. A rocket mass heater is an earthen masonry heating system which provides clean, safe and efficient warmth for your home, all while using 70-90% less fuel than a traditional woodstove.

This Masonry Heater was custom built by Andrew Brunning of RocketMassHeater.ca
Built to meet the clients heating profile and aesthetic requests, this Heater heats up to 2000sq/ft and provides a baking oven with direct firing capability.
The Heater is finished with an antique reclaimed red clay brick salvaged from a local farm in Acton ON.
The masonry heater core is built using locally manufactured standard refractory units (firebrick) and bonded with refractory mortar.

Rocket Mass Heater Workshops

Endeavour Centre Workshops

Learn how to make your own high efficiency wood heating device for your own home!
A Rocket Mass Heater (RMH) is a super-efficient wood-fired heating system composed of two parts: Part One is a rocket stove, consisting of a feed tube, burn tunnel and heat riser; Part Two is the mass chimney, through which hot exhaust gases from the rocket stove are ducted into a thermal heat storage made of masonry materials like cob, stone, urbanite or brick. All of the heat that goes up the chimney with a conventional wood stove is saved and stored in a Rocket Mass Heater. The heated up Mass can radiate heat for up to 48hrs or longer after the fire is out. A RMH can also incorporate a cooking surface and an oven, and can be finished to become a beautiful centrepiece in a home.